Magnetic structure and properties of a vanthoffite mineral Na6Mn(SO4)4

Ajana Dutta; Diptikanta Swain; A. K. Bera; Rajamani Raghunathan; Debakanta Samal; S. M. Yusuf; S. Ramasesha; T. N. Guru Row

doi:10.1103/PhysRevB.106.094419

Magnetic structure and properties of a vanthoffite mineral Na6Mn(SO4)4

Materials Science 2022-10-05 v1

Authors: Ajana Dutta , Diptikanta Swain , A. K. Bera , Rajamani Raghunathan , Debakanta Samal , S. M. Yusuf , S. Ramasesha , T. N. Guru Row

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Abstract

A detailed analysis of the magnetic properties of a vanthoffite type mineral Na6Mn(SO4)4 basedon dc magnetization, low temperature neutron powder diffraction and theoretical calculations is reported. The mineral crystallizes in a monoclinic system with space group P21/c, where MnO6 octahedra are linked via SO4 tetrahedra. This gives rise to super-exchange interaction between two Mn2+ ions mediated by two nonmagnetic bridging anions and leads to an antiferromagnetic ordering below 3 K. The magnetic structure derived from neutron powder diffraction at 1.7 K depicts an antiferromagnetic spin arrangement in the bc plane of the crystal. The magnetic properties are modelled by numerical calculations using exact diagonalization technique, which fits the experimental results and provides antiferromagnetic ground state of Na6Mn(SO4)4.

Keywords

vanthoffite mineral Na6Mn(SO4)4 magnetic structure neutron powder diffraction antiferromagnetic ordering exact diagonalization

Cite

@article{arxiv.2203.16468,
  title  = {Magnetic structure and properties of a vanthoffite mineral Na6Mn(SO4)4},
  author = {Ajana Dutta and Diptikanta Swain and A. K. Bera and Rajamani Raghunathan and Debakanta Samal and S. M. Yusuf and S. Ramasesha and T. N. Guru Row},
  journal= {arXiv preprint arXiv:2203.16468},
  year   = {2022}
}

Magnetic structure and properties of a vanthoffite mineral Na6Mn(SO4)4

Abstract

Keywords

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